<?php
/*
 *  $Id: Condition.php 7490 2010-03-29 19:53:27Z jwage $
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * This software consists of voluntary contributions made by many individuals
 * and is licensed under the LGPL. For more information, see
 * <http://www.doctrine-project.org>.
 */

/**
 * Doctrine_Query_Condition
 *
 * @package     Doctrine
 * @subpackage  Query
 * @license     http://www.opensource.org/licenses/lgpl-license.php LGPL
 * @link        www.doctrine-project.org
 * @since       1.0
 * @version     $Revision: 7490 $
 * @author      Konsta Vesterinen <kvesteri@cc.hut.fi>
 */
abstract class Doctrine_Query_Condition extends Doctrine_Query_Part
{
	/**
	 * DQL CONDITION PARSER
	 * parses the join condition/where/having part of the query string
	 *
	 * @param string $str
	 * @return string
	 */
	public function parse($str)
	{
		$tmp = trim($str);

		$parts = $this->_tokenizer->bracketExplode($str, array(' OR '), '(', ')');

		if (count($parts) > 1) {
			$ret = array();
			foreach ($parts as $part) {
				$part = $this->_tokenizer->bracketTrim($part, '(', ')');
				$ret[] = $this->parse($part);
			}
			$r = implode(' OR ', $ret);
		} else {
			$parts = $this->_tokenizer->bracketExplode($str, array(' AND '), '(', ')');

			// Ticket #1388: We need to make sure we're not splitting a BETWEEN ...  AND ... clause
			$tmp = array();

			for ($i = 0, $l = count($parts); $i < $l; $i++) {
				$test = $this->_tokenizer->sqlExplode($parts[$i]);

				if (count($test) == 3 && strtoupper($test[1]) == 'BETWEEN') {
					$tmp[] = $parts[$i] . ' AND ' . $parts[++$i];
				} else if (count($test) == 4 && strtoupper($test[1]) == 'NOT' && strtoupper($test[2]) == 'BETWEEN') {
					$tmp[] = $parts[$i] . ' AND ' . $parts[++$i];
				} else {
					$tmp[] = $parts[$i];
				}
			}

			$parts = $tmp;
			unset($tmp);

			if (count($parts) > 1) {
				$ret = array();
				foreach ($parts as $part) {
					$part = $this->_tokenizer->bracketTrim($part, '(', ')');
					$ret[] = $this->parse($part);
				}
				$r = implode(' AND ', $ret);
			} else {
				// Fix for #710
				if (substr($parts[0],0,1) == '(' && substr($parts[0], -1) == ')') {
					return $this->parse(substr($parts[0], 1, -1));
				} else {
					// Processing NOT here
					if (strtoupper(substr($parts[0], 0, 4)) === 'NOT ') {
						$r = 'NOT ('.$this->parse(substr($parts[0], 4)).')';
					} else {
						return $this->load($parts[0]);
					}
				}
			}
		}

		return '(' . $r . ')';
	}

	/**
	 * parses a literal value and returns the parsed value
	 *
	 * boolean literals are parsed to integers
	 * components are parsed to associated table aliases
	 *
	 * @param string $value         literal value to be parsed
	 * @return string
	 */
	public function parseLiteralValue($value)
	{
		// check that value isn't a string
		if (strpos($value, '\'') === false) {
			// parse booleans
			$value = $this->query->getConnection()
			->dataDict->parseBoolean($value);

			$a = explode('.', $value);

			if (count($a) > 1) {
				// either a float or a component..

				if ( ! is_numeric($a[0])) {
					// a component found
					$field     = array_pop($a);
					$reference = implode('.', $a);
					$value     = $this->query->getConnection()->quoteIdentifier(
					$this->query->getSqlTableAlias($reference). '.' . $field
					);
				}
			}
		} else {
			// string literal found
		}

		return $value;
	}
}
